The file is named user1.dat . To back it up across different Macs, simply copy this file. Unlike later versions, 1031 stores everything locally—no Steam Cloud interference.
If the game immediately closes, it may be a file path error. Right-click hollow_knight.app in your Finder. Select Show Package Contents . Go to Contents > MacOS . hollow knight 1031 mac os x
The most logical answer to the mystery is that the code "1031" refers to , the very first major content patch for Hollow Knight , released on May 17, 2017 . The file is named user1
Menderbug sheathed his nail. He knew what to do. He knelt, placed his vessel’s hand on the file, and whispered the incantation every old Mac user knows: released on May 17